Emil Kraepelin was a physician who studied people with mental illness in the late nineteenth and early twentieth centuries in modern-day Germany. Kraepelin's examination and description of the symptoms and outcomes of mental illness formed the basis for his classification of psychiatric disorders into two main groups, dementia praecox, now called schizophrenia, and manic-depressive psychosis, now called bipolar disorder. He was one of the first physicians to suggest that those researching mental illness should gain scientific knowledge only through close observation and description. However, Kraepelin also believed that genetics played a role in the development and course of mental illness and characterized mentally ill people as weak-willed, which some have argued contributed to stigma about mental illnesses that persist today. Although some historians have pointed out issues with Kraepelin’s teachings, Kraepelin helped to establish psychiatry as a clinical science, which prompted future experimental investigations into mental illness.

Hans Asperger studied mental abnormalities in children in
Vienna, Austria, in the early twentieth century. Asperger was one of
the early researchers who studied the syndrome that was later named
after him, Asperger's Syndrome. Asperger described the syndrome in
his 1944 publication Die Autistischen Psychopathen im
Kindesalter (Autistic Psychopathy in Childhood). At that time,
the syndrome was called autistic psychopathy, and Asperger noted
that characteristics of the syndrome included lack of sympathy,
one-sided conversations, and difficulty forming friendships.
Asperger's work led to the recognition of Asperger's Syndrome as a
disorder that results from abnormal development, and the syndrome was later
classed on the autism spectrum.

Scientist Franz Max Albert Kramer worked as a psychiatrist in Poland and the Netherlands in the early twentieth century and is known for his contributions to research on psychological conditions that experts call hyperkinetic syndromes. Children with hyperkinetic syndromes display inattention, overactivity, and impulsivity. Along with scientist Hans Pollnow, Kramer defined a specific kind of hyperkinetic syndrome based on an initial case study of seventeen children, initially known as Kramer-Pollnow Syndrome. In 1980, the third edition of the Diagnostic and Statistical Manual of Mental Disorders, or DSM-III, renamed Kramer-Pollnow syndrome to be attention deficit disorder, or ADD. A later revision, in 1987, renamed it attention deficit hyperactivity disorder, or ADHD. Kramer advanced child psychiatry research by laying the groundwork for further research on and understanding of what experts call, as of 2021, ADHD.

Purpose:
The purpose was to implement a self-management program to decrease pain and disability and improve self-efficacy among low-income, Latino individuals diagnosed with arthritis.

Background:
All arthritis pain has the potential to impair mobility. Arthritis is the leading cause of disability among American adults, with over 50 million individuals affected. The Latino population experiences a disproportionate incidence of disability attributable to arthritis compared to other populations. Evidence supports self-management education incorporating physical activity as a promising intervention for arthritis.

Methods:
The intervention included a curriculum developed by the Arthritis Association, three teaching sessions, and a pre/post-test. Anticipated outcomes included decreased pain measured by the Pain Visual Numeric, decreased report of disability measured by the Stanford HAQ, and increased self-efficacy measured by the Arthritis Self-Efficacy Scale. The setting was a faith-based medical clinic that services the uninsured population located within Southwest Arizona. Participants included Spanish and English speaking adults diagnosed with arthritis.

Results:
Twelve participants were consented however, only eight participants completed the entire project. Although the mean pain score decreased, indicating reduced pain, it was not statistically significant (pretest- M=5.75 SD=3.19; posttest- M=5.25 SD=2.82; z (7)=-.11, p= .92). However, there was a statistically significant increase in reports of exercise after the intervention (pretest M=.83, SD=.39; posttest- M=.43, SD=.53; z (6)=-2.0, p =.046). This was in response to an non validated question developed by the primary investigator and co-investigator of, “Do you currently exercise?”.

Conclusions:
Results include increases in reports of exercise post-intervention and decreased pain. The use of non-pharmacological interventions such as self-management to reduce pain and increase mobility in arthritic patients can help lessen the socioeconomic health disparity gaps.